源于主动脉根左边的左冠状动脉。
This is the left coronary artery from the aortic root on the left.
用自体移植物代替主动脉根，然后再缚上肺自体移植物。
Use the autograft to replace the aortic root and then attach a pulmonary homograft.
然而，主动脉旁淋巴结转移的患者的术后生存率比d 2根治术的术后生存率要低。
However, D2 lymphadenectomy plus PAND in node-positive patients resulted in poorer survival rates than D2 lymphadenectomy alone.
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